2820539

Information

• Patent Grant
• 2820539

• References
• Source

• Patent Number

  2,820,539

• Date Filed

  Not available

• Date Issued

  Tuesday, January 21, 1958
  67 years ago

• CPC

  • B41J5/52 - characterised by the provision of additional devices for producing a punched or like record
  • B41J13/12 - specially adapted for small cards, envelopes, or the like

• US Classifications

  • 400 - Typewriting machines